If your Amazon Fire TV Stick came with a voice remote, you can simply ask Alexa to open an app, and you will instantly be taken to the download page.
To do this, press and hold the button with the microphone icon or Alexa symbol, (as shown in images below), and say, “Alexa, open UKRP.”
Then select the Download button that appears on your screen by pressing the Select button on your remote.
How to download UKRP app using a Voice Remote